Question

paragraph

Answer 1

\[ \documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}

\usepackage[usenames, dvipsnames]{color}

\definecolor{mypink1}{rgb}{0.858, 0.188, 0.478}
\definecolor{mypink2}{RGB}{219, 48, 122}
\definecolor{mypink3}{cmyk}{0, 0.7808, 0.4429, 0.1412}
\definecolor{mygray}{gray}{0.6}

\begin{document}
User-defined colours with different colour models:

\begin{enumerate}
\item \textcolor{mypink1}{Pink with rgb}
\item \textcolor{mypink2}{Pink with RGB}
\item \textcolor{mypink3}{Pink with cmyk}
\item \textcolor{mygray}{Gray with gray}
\end{enumerate}

\end{document} \]

Answer 2

dangggg it won't do it

Answer 3

ill fix it for you :)

Answer 4

wait would you like me to?

Answer 5

\usepackage won't work in MathJax. You have to load them in the engine.

You can define things. Loo for Define TeX Macros: http://docs.mathjax.org/en/latest/tex.html